Faced with increasing demand from motorists for uninterrupted mobility in all winter conditions, in 1996 Cofiroute's Technical Services and Operations Department started an in-depth study of winter maintenance, notably covering the following issues: (1) general organization of winter road management; (2) tailoring of equipment resources; (3) road surface treatment methods; (4) behaviour of different deicing agents on different pavement surfaces; (5) definition of the target winter service level. (The calculation and test methods used to assess the service level were presented at the 10th International Winter Road Congress (theme: "Strategies").) Drawing on the conclusions of this detailed study, Cofiroute has revised its policy of winter serviceability of its motorway network. This article reviews the main evolutions implemented over the last 5 years, notably as regards intervention equipment and organization.